I'd appreciate it if someone could put a caliper on the stanchion tubes of their early or late (banana) leading link fork and tell me the diameter and wall thickness. I have a hazy memory that the banana fork is 1.75" /44.5mm OD but I don't have any notes confirming that. I think the wall thickness was .062"/1.5mm.

I've never had a chance to measure the early 1960s fork so I don't know if the tubing size was the same.

If while you are there you could tell me the size tubing in the link that would be nice.

thanks,

Michael

Hi
Late banana stanchion tubes :- 1 3/4'' OD , wall thickness:- 1.75mm.
Late banana lower link :- 1 1/8'' OD (cannot measure wall thickness as all ends closed).

Regards
Sparks

Thank you very much for that info! 1.75mm is .068" which sounds like 16g to me (1.5mm as I said above is .059" which would be on the low side of a nominal 1/16" for 16g).

It is nice to know that at least in this case my memory wasn't way off.

cheers,

Michael

The earliest Greeves banana forks had the brake torque arm pivot point in front of the leg tube, this was quickly changed to the rear of the tube to give a much stronger mounting point, pulling the mounting tube onto the leg of the forks not tearing it away which is possible with the early type fixing.

Edited May 5, 201412 yr by trialsrfun